Bronzing-machine.



,480.' PATENTED MAY 26, 1908.

W. FRIESS & E. WEINGARTNBR.

BRONZING MAGHINE.

APPLICATION FILED 0014, 1906.

4 SHEETS-SHEET 1.

NO. 888,480. PATENTED MAY 26, 1908. W. FRIESS 88 E. WEINGARTNER.

- BRONZING MACHINE.

APPLICATION FILED 0014, 1906.

4 SHEETS-SHEET 2.

8 PAT-ENTED MAY 26, 1908. W; FRIESS & E. WEINGARTNER.

BRONZING MACHINE.

APPLICATION FILED 0014, 1906.

4 SHEETS-SHEET 3.

No. 888,480. PATENTED MAY 26; 1908. W. FRIESS & E. WBINGKRTNER BRONZING MACHINE.

uruonmn FILED 001'. 4, 1906.

4 SHEETS-BIB}?! 4.

. Unirnn STATES PATENT OFFIC WILHELM FRIESS, or LEIPZIG-LINDENAU, AND EDUARD WEINGARTNER, or} LEIPZIQ-PLAGWITZ, GERMANY.

BnonzrNe-nAcHrNE.

- Specification of Letters Patent. I

, Patented May 26, 1908..

Application filed October 4, 1906." Serial No. 337,454.

To dllnihrim' it may concern."

.Be it known that we, WILHELM FRIESS and EDUARD- WEINGARTN R, subjects of the German Emperor, residing at Leipzig-Lindenau and Leipzig-Fla witz, Germany, respectively, have'invente certain new and useful Im rovements in Bronzing Machines, of which the following is a specification.

This invention relates to a machine for applying bronze-powder andthe like to the surace of aper or the like.

One eature of the machine consists in the fact that the brush-roller used for applying the bronze-powder is located below the perforated bottom of the owder-box in a chamber the bottom of'w ich is likewise perforated, the brushes being in contact with both perforated bottoms, and the said box and chamber being relatively adjustable so that the friction of the brushes can be increased or reduced in orderto regulate the quantity of bronze-powder used and thethickness of the powder-layer ap lied to the surface of the paper traveling tlhrough the machine.

Another feature of the machine consists of a device by means of which plush-rollers used for polishing and cleaning the powdered surfaces are freed at uniform intervals from the powder adhering thereto, the paper-feed and supply of bronze-powder being interrupted during the cleansing of the said rollers.

Another feature of the machine .consists of two adjustable, inclined plates of unequal lengths arranged on the feed-table to facilitate theadjustment of the paper and to prevent the bending of the corners of the sheet.

Another'featu're of the machine consists of a guiding device arranged in the path of the paper and consisting of several rows of threads adapted to cooperate with an endless conveyer-cloth to insure the smooth pas brush-roller, dlstributed on the latter, by

means of reciprocating pads or the like and smoothed or .polished on the paper-sheets by pipans of rollers covered with plushor the The hopper 2 through which the bronzepowder is fed to the machine is arranged on of the parts 2 and 5.

the frame 1 and is provided with a sievebot i tom 3. Below the saidhopper 2, and con= nected therewith, is a box or chamber 5 provided with a sieve-bottom 4. Between the sieves 3 and 4 is located a brush-roller or cylindrical brush 6 (Figs. 3 to '5) the axle '7 of which is mounted in bearings 8 screwed jto the machine-frame, such axle being adapted to be revolved by means of the main drivingshaft 12 and bevel-gear 14 (Figs. .1 and 2). The hopper 2 is provided with a downwardly bent flange 15 which forms a guide'for the upper part of the box 5. The latter andthe hopper 2 are interconnected by means of ad-] justing screws 17 which are mounted in the bearings 8 and engage screw-threaded lugs 16' The screws 17 are provided with right-hand and left-hand threads and are adapted to be rotated by means of cranks 18 for the purpose of moving the hopp'er and box towards each other or farther apart, the sieves 3 and 4 being thus adjusted with regard to the brush-roller 6. To allow of the relative adjustment of the box and hopper the end-walls of both are provided with apertures for the axle 7 of the brushroller.

When the hopper and box occupy the po- I sitions shown in Fig. 4, the hopper being filledwith bronze-powder and the machine started, the revolving brush 6 loosens the powder at the bottom of the hop er and.

causes said owder to fall through t e sieve 3 on to the. rush. The brush transfers the owder to the sieve 4- and rubs it through ,the

'machine, and it is driven by means of the Atthe side of the bronze-feed device there are arranged side-by-side two rollers 22. and 23 covered with soft material and making contact with the cloth 21. The rollers 22 and 23 are interconnected by means of a chain 24 and are adapted to be driven by means of the shaft 7 and gear-wheels 25 and .26, the purpose of the said rollers being to exert elastic pressure on the bronze-powder ap lied to the paper. Behind the rollers 22 an 23 is rranged a device for distributing the bronze powder. This device comprises a plurality of'fiat strips 27 ofsuitablelen'gth and width, the under-surfaces ofwhich are covered wlth soft material which is in contact with the cloth 21'. .The strips 27 are i to rods 30 by means of screws 28 and nuts 29, the rods 30'bein supported by boxes 31 and 32 (Figs. 1 an 2) arranged at the sides of the machine and adapted to be horifixed to the s aging the cams 33 are arrangedbetween the rods 36 and serve'to impart motion to the latter.

l At the rear of. the machine are mounted I the plush-rollers 36 37, 38 and 39 which are.

the P 1 bronze-coated sheets of paper. Above each,v

in the same direction as the front roller 36.

driven by means of suitable gear-wheels for se of. polishing'and cleansing the 'of the uppber rollers 36 and 38 there is arranged a 42 which engage ins 46 at the sides of the machine frame. levers48 fixed to a shaft 50 mounte 'ings 49.- A downwardly directed lever 51 lied to the shaft is connected to a bell crank lever 53 ivoted at 52, the lever 53 being-connected" y a' link 54 to a bell-crank lever 56 pivoted at 55. The downwardly di-' rected arm ofthe lever 56 is rovided witha roller 57 which rests upon as owly revolving cam-disk 58, against which it is held by a spring 59. In the position of rest the shaft 59,is so adjustedthat the bars 47 conneczed thereto by the levers 48 are withdrawn, he brushes 40 being by this means removedfrom the lush rollers 36 and 38. When, however, t e lever 56 is rotated about its pivot by the action of the cam-disk 58,. the evers 51 and 53 slightly rotate the shaft 50 so that the bars 47 are thrust forwards by v the levers 48, and the brushes 40 are thus placed against the rollers 36 and 38 in order to remove the bronze latter.

At 60 a double-armed'lever 61 is fulcrumed in the frame, said lever bein adapted to copowder adhering to the o erate with the lever 51 w 'ch rotates the s aft 50, so that when the brushes 40 are lowered on to the lush-rollers 36 and 38 the lever 61 is rocke The lower end 62 of the lever 61 is bifurcated and engages the hub of a gear-wheel. 64 loosely mounted on the shaft 9 (Figs. 1, 6, 7 and 8)-so that the rocking of the ever 61 causes the gear-wheel 64 to be displaced. The said gear-wheel is adapted to cooperate-by means of a clutch the wheel 78 being'adap'ted to rush 46 equal inhe th to" the I roller and-fixed to'bars 47 provide with! slots v76 are fixed lateral he bars 47 are en aged by; f in bear- ,the elastic covers of t with a toothed-wheel 65 fixed to the shaft 9 and is normally held in engagement with the wheel 65 by a spring 66 wound on the shaft. The ear-wheel 65 meshes with a pinion 68 loose y mounted on a gudgeon 67 and prorear end of'whic a pinion 70 is provided.

The pinion 70'm'eshes with a gear-wheel 7 2 fixed to the axle 71 of the lower polishing roller 37 and the rotary movement lmparted to the latter by the'pinion 70 is transmitted to the lower polishing roller 39 by-m'eans of a gear-wheel 73 and a pinion 74 fixed to the W axle 75 of the said roller. The toothed wheel 64 meshes with a toothed wheel 76 fixed .totheaxle .71, and-the toothed wheel 76 meshes with altoothcd wheel 78 which is slidable on the axle 77 of the up er roller 36, 've the said axle 77 by. means of a feather working in a slot. When .the gear-wheel 6,4 is in engagement with the'gear-wheel 65 and the machine is working the upper roller 36 is driven and transmits its movement to the axle 80 .of the upper roller.38 by means of gear-wheels 79 an 81, so thatthe said rolle'r'38 is revolved To the, circumference of the toothed wheel rings 82 which engage the. an- 78/ (Figs. 7 and 8) so that when tthe 'wheel. 64 is displaced the wheels 76 andTfZS are also displaced. When toothed .wheels 64 the wheels 64, 76 and .7 8'are moved inwards by the lever 61 thej hrushes 40 are moved against the rollers '36'and38 and the clutch gaged: Immediately 'afterwardsthe wheel to' the engagement 0 the wheels 72 and 76, the two upper 'rollers 36 and 38 are now also revolved in the opposite direction, and

polishing rollers 36 and 38 are by this-means roughed and at the same time freed from bronze powder, there bein at this stage no paper between the said rol ers, as will be explained hereinafter.

In orden to discontinue the and to prevent the insertion of esh papersheets into the machine during the, cleansing of the polishin rollers the following arrangement is provided. The toothed wheel 182 which drives the cam-disk 58 is provided.

with a pin 83 (Figs. 1 and 6) in the patl of which is located one end of a lever fixed to-a shaft 84 (Fig. 1).

e upper and lower owder-feed To the latter are fixed arms 86, each of which enga es a vertical rod 91 on which a downward pu l is exerted by a spring 90 and the upper end of which is con- 7 videdwith alon hub or sleeve 69, at the 100 connectin .the. whe el s' 64 and 65 is disennected to a cross-bar 89 normally resting in a slot 87 in the feed-table 88. When the lever 56 is operated by the cam-disk 58 the lever 85 is depressed by the pin 83, so that the shaft 84 is rotated and the bar 89 lifted against, the pull of'the springs 90. The said bar thus pro'ects above the plane of the feedtable 88 an prevents the insertion of fresh sheets of,paper. At one side of the bar 89 a roller 92 is so arranged (Figs. 1 and 2) that when the bar is lifted from the groove 87 the said roller rolls on the face 93 of a lever 95 which is fulcrumed at 94and is connected to a bevel wheel slidable on the axle 7 of the brush-cylinder 6. By this means the said bevel-wheel is displaced, so that the brushcylinder ceases to be driven and the feed of bronze-powder is discontinued. When the bar 89 is lowered the lever 95 is moved back to its revious position by a helical sprin 96 wound on the axle 7, and the bevel-w eel connected to the said lever is thus caused to meshwith the bevel-wheel fixed to the shaft 12, so that the feed of bronze-powder'recommences.

Onthe feed-table 88 two adjustable plates 97 and 98 (Figs. 9 to 11) of une ual length are arranged on the right hand an dleft hand sides respectively, between the bar 89 and the conveyer cloth 21, the front parts of the said plates being so bent that the sheets are smoothly guided into the machine without' danger of being creased or crumpled.

To the box 5 containing the brush-cylinder 6 there are fixed two bearings which support a cross-bar 99. 4 To the latter are fixed, 'at regular intervals, a suitable number of hooks 100, to which are connected threads 101 provided with loops. The said threads 40 extend practically over the entire length of the path traversed by the paper between the conveyer-cloth 21, bronze-feed device, rollers 22 and 23, strips 27, and polishing rollers 36 and 37, and ,ass over a shaft 192 located --5 between the roliiers 36 and 38. Loops at the rear ends of. the threads 'are engaged by hooks 1Q3 fixed to a cross-bar 105 sup orted by bearings 104 (Fig. 12). The ,t reads guide the paper smoothly through the machine and prevent creasing or crumpling of the sheetsduring their passage between the rollers. What we claim as our invention and desire. to secure by Letters Patent of the United States is 1. In a bronzing machine the combination ofan endless cloth adapted to feed a sheet of material through the machine a feed hopper, I

.' an adjustable brush cylinder adapted toreof a feed table a conveyer clothadapted to feed a sheet of material through the machine a feed hopper located over said conveyer cloth an adjustable brush cylinder adapted to receive bronze powder from said ho per and apply same to the surface of said s eet' and adjustable plates of various len ths lo- I cated in advance of said conveyer c oth at each side of the latter, said plates being shaped to uide the sheets smoothly to said conveyer c oth substantially as described- 3. In a bronzing machine the combination with .a feed table, an endless conveyer cloth adapted to feed a sheet of material through the'machine, a feed hop er located above said conveyer cloth, a per orated bottom for said ho per, a box located below the latter, a

revolub e brush cylinder mounted within said box between the perforated bottoms aforesaid, and adapted to apply bronze powder to the surface of said sheet means for relatively adjusting said box and hopper, revolu ble rollers adapted to exert elastic ressure on the bronze powder fed to sa' sheet, means for distributing'the owder on the latter, plush rollers for polis ing the bronzed surface, brushes for cleansing the bronze powder from said plush rollers at intervals,

means for interrupting the feed of bronze powder during the cleansing of said rollers, means for reversing the direction of rotation of the plush rollers duringsuch cleansing o eration, adjustable lates for guiding t e sheets of material to the conveyer cloth afore-. said, and a series ofjthreads cooperating with said cloth to guide the sheets through the machine substantially as described.

In witness whereof we have signed this i specification 1n the resenceof two witnesses.

WILH JLM FRIES.' EDUARD WEINGARTNER. Witnesses:

MORITZ SPREER, RUDULPH FRIOKE. 

